Where do auroras occur in the atmospheres?

An aurora will occur in the arctic and Antarctic circles. They can occur outside of the circle, but rarely. the southern lights (aurora australis) occur around Antarctica and places like Macquarie island. sometimes you can see it from southern Australia like at Tasmania, south Victoria, Patagonia, and places around there. The northern lights occur around Greenland and Scandinavian countries like Norway, Iceland, Finland, Sweden, north of Denmark, north of Canada, Alaska and north of Russia. they occur around Christmas time from November to January. they are bright green and sometimes red. they appear in the thermosphere (100-150km above the earths surface). they come from the collision of protons and electrons from the sun which causes a flare to zoom through the solar system past mercury and Venus and shoots across the earths magnetic field into the arctic and polar region. they will occur around 12:00am - 5:00am in the morning. sometimes they are bright and amazing and sometimes they are just a small green glow in the distance. they can will probably be seen north if you live in arctic areas (unless you are in the north pole) and can be seen south if you live around there (unless you are in the south pole). They are like a ring shape from space.